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Spy Equipment Home - Voice Recorders - Spy Voice Recorders - GSM Mobile Phone Voice Recorder

GSM Mobile Phone Voice Recorder

GSM Mobile Phone Voice Recorder
£999.00(£1198.80 incl VAT)
OUR PRICE: £850.00 (£1020.00 incl VAT)
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GSM Digital Voice Activated Mobile Phone Recorder; with omni-directional dual microphones

This is a unique voice activated digital audio surveillance device specifically designed for recording incoming / outgoing mobile phone calls.  Unlike conventional digital voice recorders, this GSM Mobile Phone Voice Recorder will only switch ON and record the moment it detects GSM frequency signals - ignoring all other sound distractions whilst in voice activation mode for example; general chatter, car radio's, CD players, televisions, machinery etc.  This is a fantastic custom-built recorder with integrated dual stereo omni-directional microphones for superior recording quality.


The GSM mobile phone voice recorder can be placed / hidden within the target room / car environment ready to record all mobile phone/s within the vicinity.  The unit is integrated with two (2) powerful, highly sensitive microphones offering 360 degrees of detection from over 35 feet away from where the unit is placed / hidden.  All recordings are stored with a time counter to both internal flash memory and removable SD card.

The unit can either be powered by 2x AA lithium batteries which will provide approx two (2) weeks standby or can be connected to any mains power supply for unlimited standby operation.

To play back stored recordings, this can be done either directly through the devices in-built speaker, or simply connect the device to your computer.  You may also remove the SD card from within the unit and play through your computers Media Player or any other compatible media player.  Recordings can also be stored to your computer, archived or emailed in seconds.



Why use such recording equipment?
We were approached by an education trust whereby pupils were using mobile phones to cheat in exams.  This was done by the pupil using an invisible earpiece connected via Bluetooth to their mobile phone hidden under clothing which enables the pupil to discreetly communicate to a third party (with access to a computer) feeding information.

The distinct advantage of using this custom-built product means all other audio interference including normal conversations and any other background noise is completely ignored whilst only an active GSM signal will trigger the unit to detect the handset being used and record that call for one (1) minute before returning to standby mode.  This cycle will continue until either the power is depleted (if using lithium batteries) or the memory becomes full.

This is a very powerful advantage for education departments or any other business that must detect and identify person/s using restricted equipment.

Our GSM mobile phone voice recorder could also be used to:
  • Discreetly record and identify an employee/s who may be using their mobile phone to discuss sensitive company material to competitors.
  • Discreetly record and identify an employee/s who may be abusing company mobile phone use.
  • Confirm or quash suspicions that your partner may be making / receiving mobile phone calls in their vehicle that you need to know about.
In all situations above, the GSM voice activation feature will provide much longer battery operation than continuous recording whilst filtering out unwanted recordings that would otherwise trigger a standard digital voice recorder.

Please Note:  Only one side of the mobile phone conversation can be recorded.  The unit whilst being superior in audio recording quality is not possible to pick-up the other person on the end of the call speaking. 



This discreet surveillance audio recorder is specifically custom-built and designed to offer a unique spin on standard digital audio voice recorders.  A fantastic way to incorporate a covert voice recorder into your home, office or vehicle environment without arousing any suspicion.
  • A unique custom-designed digital GSM frequency detector and recorder
  • Auto detects all GSM mobile phone signals 
  • Professionally hand-built
  • Totally silent operating mechanism
  • Voice activated recording
  • Plug and Play technology
  • Omni-directional dual stereo microphones
  • Powers from lithium batteries (2x AA)
  • Powers from mains electrical supply 
  • One (1) minute burst recording upon detection
  • Standby time (battery) - approx two (2) weeks
  • Standby time - unlimited once plugged to any mains wall socket
  • Recording time - five (5) hours
  • Recording format - WAV 16-bit / WAV 24-bit / MP3
  • Recording quality - 128 KBPS
  • Sampling rate - up to 96 KHz
  • Signal to noise ratio - 55 dB
  • Frequency - 20 - 20 KHz
  • Replay time - six (6) hours
  • Timer counter and reset
  • Audio recording distance - approx 35 feet
  • Storage format - 128 MB Flash memory and SD card (two (2) GB maximum).  SDHC (four (4) GB maximum)
  • Two (2) memory folders - folder 1 / 2
  • Audio input - 2x 6.35 mm
  • Audio output - 3.5 mm
  • Play stored audio recordings through any supported media player
  • Play back format - WAV / PCM WAV / MP3 / MPEG1 / MPEG2 / MPEG2.5 layer 3 of 32 K - 320 KBPS
  • Repeat function
  • Key lock
  • Loop play back
  • Recording level control
  • Audio-in socket - allows two (2) further external microphones to be connected
  • Line-out socket
  • Headphone socket
  • MIC level switch
  • LED lamp
  • USB connection
  • Built-in speakers
  • Power supply - 5 V - 12 V DC
  • Dimensions - 15 x 8.5 x 3 mm
  • Weight - 200 grams
  • Compatible with Windows and Mac operating systems
  • Supplied with GSM mobile phone voice recorder, USB cable, two (2) GB SD card and User Guide
  • A unique device for monitoring GSM communications and discreetly capturing important meetings, interviews, dictation, or verbal slander audio for evidential purposes
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